Don't be surprised if it is coming in CS 6 though. Adobe is on top for a reason. Most companies that have a stranglehold on there market do it one of two ways, dirty tactics or superior innovation. Intel thinks far into the future, who's to say Adobe, a software Developer who faces little real competition in the market place, doesn't have many things lined up but plans to slowly release them over the course of many versions? That's what I'd do at least, no reason to drop all your R&D in one major version upgrade and then just twiddle your thumbs until the software engineers can come up with something else. It's all about milking your product to the max you can afford before pushing things once more.